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Table 2 Pre- and post-surgery measurements, comparison between those with and without altered sensory profile in QST

From: Altered somatosensory profile according to quantitative sensory testing in patients with degenerative lumbar spine disorders scheduled for surgery

  Pre-surgery measurements   Post-surgery measurements  
Without altered sensory profile  n = 82a Altered sensory profile  n = 23b P Without altered sensory profile n = 79c Altered sensory profile  n = 21d P
Age, mean (SD) 58.6 (12.5) 64.0 (13.8) 0.031      
Women, n (%) 37 (45) 18 (78) 0.005      
Spinal stenosis, n (%) 45 (55) 16 (70) 0.207      
Disc herniation, n (%) 24 (29) 6 (26) 0.765      
Pain duration >2 years, n (%) 44 (56) 11 (50) 0.859      
ODI, mean (SD) 37.1 (15.9) 42.9 (15.7) 0.112 28.4 (17.2) 30.8 (18.0) 0.566
VAS back pain, mean (SD) 50.9 (27.5) 63.6 (19.3) 0.016 28.8 (26.2) 38.3 (26.6) 0.147
ODI > 40% n (%) 37 (48.1) 15 65.2) 0.148 14 (17.9) 6 (28.6) 0.641
VAS leg pain, mean (SD) 58.8 (27.0) 69.3 (15.1) 0.020 23.7 (28.5) 34.0 (27.5) 0.146
EQ-5D index, mean (SD) 0.43 (0.30) 0.37 (0.32) 0.430 0.62 (0.28) 0.68 (0.16) 0.356
EQ-VAS, mean (SD) 51.9 (22.2) 45.9 (21.1) 0.250 66.3 (21.3) 73.4 (19.7) 0.173
HADS anxiety, mean (SD) 5.8 (3.6) 6.6 (4.49) 0.345 4.05 (3.1) 5.4 (4.0) 0.110
HADS depression, mean (SD) 4.6 (3.2) 4.8 (3.9) 0.832 3.27 (2.93) 3.84 (3.30) 0.455
SES, mean (SD) 132.9 (41.5) 116.3 (35.4) 0.120 155.0 (32.7) 146.2 (41.9) 0.348
SF-36 PCS, mean (SD) 30.1 (9.4) 26.9 (7.3) 0.117      
SF-36 MCS, mean (SD) 48.3 (11.69) 39.8 (13.06) 0.004      
FABQ-PA, mean (SD) 14.8 (6.1) 15.0 (6.0) 0.870      
Pain drawing n (%):  
 Back or unilateral leg pain 37 (46.3) 4 (17.4) 0.029      
 Bilateral leg pain 31 (38.8) 12 (52.1)      
 Back- leg pain and other pain locations 12 (15) 7 (30.4)      
  1. QST Quantitative sensory testing, SD standard deviation, ODI Oswestry Disability Index (0–100) (higher score indicate higher disability), VAS visual analogue scale (0–100) (higher score indicate higher pain intensity); EQ-5D (− 0.594 - 1) and EQ-VAS EuroQol (higher score indicate better health), HADS Hospital anxiety and depression scale (0–21) (higher score indicate more signs of symptoms), SES Self-Efficacy Scale (0–200) (higher score indicate better self-efficacy), SF-36 PCS, physical component summery and MCS, mental component summery (0 – 100) (higher score indicate better health), FABQ-PA fear avoidance beliefs questionnaire – physical activity (0–24) (higher score indicates higher level of fear avoidance beliefs)
  2. aMaximum missing data in each column: n = 7, b n =4, c n = 6, d n = 4